Slide 1Outlinecode-compile-debug (ccd)How do you develop your class projects?Limitations of the ccd processThe software development processThe Boehm-waterfall modelSoftware Development ModelsThe V ModelIntroduction to Software Development1Outline•The code-compile-debug process for writing a program•The software development process2code-compile-debug (ccd)•The process of developing a computer program (when the requirements are clearly defined).3•IDE: Integrated Development Environment e.g., NetBeans for Java developmentHow do you develop your class projects?1. Understand the given requirements.2. Verify that your understanding is correct?3. Design the program Program design (e.g., UML diagrams, pseudo-codes)4. Verify that your design has captured all the requirements?5. Implement the design (by coding each of the classes defined in the UML class diagram).  The ccd process6. Test the implemented program(s).7. Verify that your program is a correct implementation of the design?4Limitations of the ccd process •It applies only to the step of developing the programs/codes (i.e., coding).•It only works when the requirements are clearly defined, or little effort is needed to analyze the requirements.e.g., class projects•Program-in-small vs program-in-large:–Developing a large-scale software involves more activities than coding, such as analysis, design, testing, etc.5The software development process6•The waterfall model for software development and maintenance(source: http://en.wikipedia.org/wiki/Waterfall_model) Q: Have you identified any problem(s) with this model?The Boehm-waterfall model•From: http://infolab.stanford.edu/~burback/watersluice/node52.html 7•Validation is part of each phase.•Iterative loopbacksSoftware Development Models•There exist many models for developing large-scale software.V modelSpiral modelFast prototypingIncremental model…•Linkshttp://www.scribd.com/doc/36404631/13/Sample-SDLC-Models http://www.win.tue.nl/~wsinruur/FormalMethodsCollege/Multiple%20V%20model%20v10.pdf http://en.wikipedia.org/wiki/Spiral_model8The V Model•From: http://www.win.tue.nl/~wsinruur/FormalMethodsCollege/Multiple%20V%20model%20v10.pdf